Discusses means of disseminating information about hazardous laboratory materials and situations; includes student-student contact, student-teacher contact, textbooks, research papers, and government services. (MLH)

This is the first inquiry in a series designed to facilitate the exchange of information among members of the National Association of Language Laboratory Directors. This inquiry identifies, by means of a chart, systems used by fifty-nine institutions in their language laboratories. (AM)

Describes a means of collecting evolved gases which overcomes the usual disadvantages experienced in covering the electrodes with test tubes full of electrolyte solution. (GS)

The results of a process of designing, building, and "de-bugging" two replacement language laboratory hardware systems at Concordia University (Montreal) are described. Because commercially available systems did not meet specifications within budgetary constraints, the systems were built by the university technical department. The systems replaced…

Describes an undergraduate laboratory project involving lecithin which integrates two general aspects of lipid methodology: chromatographic techniques and use of enzymes specificity to obtain structural information. (Author/SLH)

Described is thin-layer chromatography (TLC), a technique that can be conveniently used in the laboratory to generate evidence supporting the principle that degrees of biochemical similarity reflect degrees of evolutionary relatedness among organisms. (Author/PEB)

Presents Latin square mathematical techniques for assigning laboratory partners so that each pair of individuals work together only once. (MLH)

Describes and discusses an arrangement of laboratory equipment by means of which small groups may converse with each other and with the teacher without interfering with other groups working in the same laboratory. Includes schematic diagram. (Text is in German.) (IFS/WGA)

This article discusses how the audio-tutorial format can result in less strain on students as well as significant improvement in the quality of instruction. (JS)

This course is designed for those requiring an introduction to instruments commonly used in water pollution analyses. Examples are: pH, conductivity, dissolved oxygen meters, spectrophotometers, turbidimeters, carbon analyzer, and gas chromatographs. Students should have a basic knowledge of analytical chemistry. (CO)

RECOMMENDED STANDARDS FOR AUDIOVISUAL EQUIPMENT WERE PRESENTED SEPARATELY FOR GRADES KINDERGARTEN THROUGH SIX, AND FOR JUNIOR AND SENIOR HIGH SCHOOLS. THE ELEMENTARY SCHOOL EQUIPMENT CONSIDERED WAS THE FOLLOWING--CLASSROOM LIGHT CONTROL, MOTION PICTURE PROJECTOR WITH MOBILE STAND AND SPARE REELS, COMBINATION 2 INCH X 2 INCH SLIDE AND FILMSTRIP…